#ifndef __DRV_SYSTICK_H__
#define __DRV_SYSTICK_H__
#include <stm32F4xx.h>
void  drv_systick_init(uint8_t systick );
void drv_systick_ms(uint16_t ms);
void drv_systick_us(uint16_t us);
#endif// __DRV_SYSTICK_H__
